6

24) In an experiment, you measure the concentration of a polar molecule inside and  
       outside the cell and find that the concentration of this molecule is gradually         
       increasing inside the cell.  You also measure the concentration of ATP inside  
       the cell and find that it is dropping. Which of the following processes are you  
       likely to be observing? 
 A) 

Osmosis 

B) Facilitated diffusion 

C) Active Transport 

D) Simple diffusion 

E) Passive transport 

 
25) The movement of 

water

 across a membrane from a solution of lower solute  

        concentration to a solution of higher solute concentration is best described as 
 A) 

Osmosis 

B) Facilitated diffusion 

C) Active Transport 

D) Simple diffusion 

 E) 

Endocytosis 

 
26) Mitochondria and chloroplasts share all of the following characteristics  
       EXCEPT that they: 
 

A) Are capable of ATP synthesis. 

          B) Capture the energy of sunlight to meet metabolic demands. 
          C) Possess their own DNA 
 

D) Are surrounded by a double membrane 

E) Were originally independent organisms 

 
27) Which of the following will be least likely to degrade a protein? 
 

A) Temperature greater than 100 degrees centigrade 

B) Strong acid 

C) Strong base 

 D) 

Water 

 E) 

Poisons 

 
28) Which of the following energy-generating processes is the only one that occurs  
       in almost all living organisms? 
          A) Glycolysis 
 B) 

Combustion 

C) Krebs Cycle 

 D) 

Photosynthesis 

 E) 

Chemiosmosis